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Fuel Rail

tones

By tones,
in Engines & Forced Induction

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tones Enthusiast

tones

Posted
Posted

Just after some advice, I need to upgrade my fuel system on my 25/30. Was going to go twin 044's, surge tank, I have 800cc injectores, and was wonder what sort of power the standard r32 rb25 fuel rail will support? We're looking at 400+ rwkw, and figure I might as well make the system capable of running e85 with just an injector up grade later. Any advice is appreciated.

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tones Enthusiast

tones

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Posted (edited)

We made 350kw with 550s but were maxed out. Not to far above 400kw. Titan and n1gtr are you talking with e85? I am aware i'll need bigger injectors with the e85 (wasn't sure how big though) but just wanted to make sure the rail holds the volume needed to support the fuel flow needed. I've heard of people doing twin feeds with return in the middle on the standard rail, is this any good? do aftermarket rails hold more volume? would that matter? I am new to these fuel setups and dont want to waste money if i can help it.

Edited by tones
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N1GTR Grand Master

N1GTR

Posted
Posted
something thats odd, hamish makes 320kw on 550cc, anthony makes 350-370 on 740cc and you make 403 on 1000cc.

out of fuel pump flow more than out of injector?

All rb30's?

Only change was injectors and look where it is now

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N1GTR Grand Master

N1GTR

Posted
Posted
We made 350kw with 550s but were maxed out. Not to far above 400kw. Titan and n1gtr are you talking with e85? I am aware i'll need bigger injectors with the e85 (wasn't sure how big though) but just wanted to make sure the rail holds the volume needed to support the fuel flow needed. I've heard of people doing twin feeds with return in the middle on the standard rail, is this any good? do aftermarket rails hold more volume? would that matter? I am new to these fuel setups and dont want to waste money if i can help it.

Yes e85

For the price of a twin entry rail I wouldn't bother to mod the stock one

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  • 1 month later...
rockabilly Rising Star

rockabilly

Posted
Posted

weld some fittings on the end of the std rail, i have found the std rail has the largest inside volume of any aftermarket rail. i run 640 @ the hubs with 1000cc injectors on a std rail.. just my 2p worth .lol

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